Abner Doubleday was a U.S. Army officer, who was once thought to be the inventor of baseball until the game was found to be of English origin.
Abner Doubleday. (2013). The Biography Channel website. Retrieved 01:31, May 25, 2013, from http://www.biography.com/people/abner-doubleday-9277900.
Abner Doubleday. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/abner-doubleday-9277900 [Accessed 25 May 2013].
"Abner Doubleday." 2013. The Biography Channel website. May 25 2013, 01:31 http://www.biography.com/people/abner-doubleday-9277900.
"Abner Doubleday," The Biography Channel website, 2013, http://www.biography.com/people/abner-doubleday-9277900 [accessed May 25, 2013].
"Abner Doubleday," The Biography Channel website, http://www.biography.com/people/abner-doubleday-9277900 (accessed May 25, 2013).
Abner Doubleday [Internet]. The Biography Channel website; 2013 [cited 2013 May 25] Available from: http://www.biography.com/people/abner-doubleday-9277900.
Abner Doubleday, http://www.biography.com/people/abner-doubleday-9277900 (last visited May 25, 2013).
Abner Doubleday. The Biography Channel website. 2013. Available at: http://www.biography.com/people/abner-doubleday-9277900. Accessed May 25, 2013.